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WO2016036325A1 - Procédé de préparation de catalyseur de polymérisation d'oléfines à activité élevée - Google Patents

Procédé de préparation de catalyseur de polymérisation d'oléfines à activité élevée Download PDF

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Publication number
WO2016036325A1
WO2016036325A1 PCT/TH2015/000055 TH2015000055W WO2016036325A1 WO 2016036325 A1 WO2016036325 A1 WO 2016036325A1 TH 2015000055 W TH2015000055 W TH 2015000055W WO 2016036325 A1 WO2016036325 A1 WO 2016036325A1
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WO
WIPO (PCT)
Prior art keywords
catalyst according
titanium
preparing catalyst
mixture
chloride
Prior art date
Application number
PCT/TH2015/000055
Other languages
English (en)
Inventor
Sutheerawat SAMINGPRAI
Tienkul Kangwanwong
Nared Phetrak
Original Assignee
Ptt Global Chemical Public Company Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from TH1401005145A external-priority patent/TH1401005145B/th
Application filed by Ptt Global Chemical Public Company Limited filed Critical Ptt Global Chemical Public Company Limited
Priority to JP2017512040A priority Critical patent/JP6779202B2/ja
Priority to EP15782094.5A priority patent/EP3189085B1/fr
Priority to KR1020177007665A priority patent/KR102446942B1/ko
Priority to US15/508,790 priority patent/US20170267791A1/en
Priority to CN201580047387.9A priority patent/CN106715482B/zh
Publication of WO2016036325A1 publication Critical patent/WO2016036325A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F4/00—Polymerisation catalysts
    • C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
    • C08F4/44—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
    • C08F4/60—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof
    • C08F4/62—Refractory metals or compounds thereof
    • C08F4/64—Titanium, zirconium, hafnium or compounds thereof
    • C08F4/65—Pretreating the metal or compound covered by group C08F4/64 before the final contacting with the metal or compound covered by group C08F4/44
    • C08F4/652—Pretreating with metals or metal-containing compounds
    • C08F4/655—Pretreating with metals or metal-containing compounds with aluminium or compounds thereof
    • C08F4/6555—Pretreating with metals or metal-containing compounds with aluminium or compounds thereof and magnesium or compounds thereof
    • C08F4/6557—Pretreating with metals or metal-containing compounds with aluminium or compounds thereof and magnesium or compounds thereof and metals of C08F4/64 or compounds thereof
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F10/00—Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
    • C08F10/02—Ethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F10/00—Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F2/00—Processes of polymerisation
    • C08F2/38—Polymerisation using regulators, e.g. chain terminating agents, e.g. telomerisation
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F4/00—Polymerisation catalysts
    • C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
    • C08F4/44—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
    • C08F4/60—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof
    • C08F4/62—Refractory metals or compounds thereof
    • C08F4/64—Titanium, zirconium, hafnium or compounds thereof
    • C08F4/642—Component covered by group C08F4/64 with an organo-aluminium compound
    • C08F4/6421—Titanium tetrahalides with organo-aluminium compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F4/00—Polymerisation catalysts
    • C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
    • C08F4/44—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
    • C08F4/60—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof
    • C08F4/62—Refractory metals or compounds thereof
    • C08F4/64—Titanium, zirconium, hafnium or compounds thereof
    • C08F4/643—Component covered by group C08F4/64 with a metal or compound covered by group C08F4/44 other than an organo-aluminium compound

Definitions

  • the present invention relates to chemical mixture and chemical process for preparing high activity olefin polymerization catalyst.
  • Ziegler-Natta catalyst is the suitable catalyst for polyolefin polymerization process.
  • preparation of industrial polyolefin using said catalyst always have problem in the formation of low molecular weight polyolefin or wax as by-product, which are cheap and unwanted products. Therefore, high activity catalyst has been developed to overcome such problem.
  • US patent number US6429270 disclosed a method for improving Ziegler-Natta catalyst by using at least 2 supports together with treating the catalyst with organoaluminium compound and an electron donor having silicon as a component. It was found that the catalyst prepared by said method gave high activity for propylene polymerization. However, improving of catalyst according to said invention comprised with many steps, made it difficult in preparation, and was limitation in preparation of catalyst for using in industrial scale.
  • European patent number EP2428526 disclosed a preparation method for polyethylene with homogeneity using Ziegler-Natta catalyst which is contacted with organoaluminium compound and activated partial polymerization reaction with ethylene before substantial reaction in multi-stages reactor.
  • said process comprised many steps, making it difficult and complicated for the preparation.
  • US patent number US6916895 disclosed a preparation method for Ziegler-Natta catalyst that is able to modify molecular weight distribution of polyolefin by controlling size and morphology of the catalyst. Said process comprising the following steps: treating magnesium dialkoxide compound with titanium compound and organoaluminium compound, then treating at high temperature of about 90 to 150 °C for about 30 minutes to 2 hours.
  • said process comprised many steps and need high temperature treatment which could be difficult for industrial scale, including higher production cost which is limitation of this invention.
  • US patent number US7365138 disclosed an improving method for Ziegler-Natta catalyst by contacting the catalyst with organoaluminium compound and/or olefin before using as the catalyst for olefin polymerization. This was found that the catalyst of said method could reduce the formation of small particle of polymer. However, said catalyst had low activity.
  • this invention aims to improve an olefin polymerization catalyst to have high activity, whereas polyolefin obtained from said catalyst have narrow molecular weight distribution. Said process can be performed easily, reducing complicated steps, and can be performed at low temperature.
  • the present invention relates to a method for preparing high activity olefin polymerization catalyst, said method comprising the following steps:
  • Figure 1 shows activation percentage of the catalyst after reacting with TEA in different times, wherein the mole ratio of Al/Ti for treatment is 5 and treatment temperature is at room temperature.
  • Figure 2 shows activation percentage of the catalyst after reacting with TEA in different times, wherein the mole ratio of Al/Ti for treatment is 1 and treatment temperature is 0 °C.
  • Figure 3 shows the results of the mole ratio of Al/Ti to activation percentage after reacting with TEA.
  • Figure 4 shows TREF-GPC chromatogram showing molecular weight distribution of the polymer.
  • Figure 5 shows tensile modulus property of the polymer resulted from the catalyst according to the invention.
  • Figure 6 shows tensile strength at yield point property of the polymer resulted from the catalyst according to the invention.
  • the present invention relates to a method for preparing high activity olefin polymerization catalyst which can be described by the following aspects.
  • compositions and/or methods disclosed and claimed in this application are intended to cover aspects of the invention obtained from performing, operating, modifying, changing any factors without experimentations that are significantly different from this invention, and acquire the same which have properties, utilities, advantages and results similar to the aspects of the present invention according to those ordinary skilled in the art even without being indicated in claims specifically. Therefore, the substitution for or similarity to the aspects of the present invention including minor modification or chang that can be apparent to a person skilled in the art in this field shall be considered under the intention, concept and scope of this invention as appeared in the appended claims.
  • the present invention relates to a method for preparing high activity olefin polymerization catalyst, said method comprising the following steps:
  • magnesium halide in step (a) may be selected from magnesium dichloride, magnesium dibromide, phenoxy magnesium chloride, isopropoxy magnesium chloride, buthoxy magnesium chloride, or a mixture thereof.
  • magnesium halide is magnesium dichloride.
  • alcohol solvent in step (a) may be selected from, but not limited to ethanol, isopropanol, butanol, hexanol, 2-hexanol, octanol, or a mixture thereof.
  • Organo compound of group III element in step (b) is alkyl compound of group III element, tris(halophenyl)borane, or alkylaluminium alkoxide, dialkylaluminium chloride, or a mixture thereof.
  • organo compound of group III element in step (b) is alkyl compound of group III element which can be selected from, but not limited to trimethylaluminium, triethylaluminium, triisobutylaluminium, tripropylaluminium, trimethylborane, triethylborane, triisobutylborane, or a mixture thereof.
  • organo compound of group III element in step (b) is tris(halophenyl)borane which can be selected from, but not limited to tris(pentafluorophenyl)borane, tris(trifluoromethylphenyl)borane, tris(tetrafluoroxylyl)borane, tris(tetrafluoro-o-tolyl)borane, or a mixture thereof.
  • organo compound of group III element in step (b) is alkylaluminium alkoxide which can be selected from, but not limited to diethylaluminium ethoxide, ethylaluminium diethoxide, diisobutyl aluminium ethoxide, or a mixture thereof.
  • organo compound of group III element in step (b) is dialkylaluminium chloride which is selected from dimethylaluminium chloride, diethylaluminium chloride, diisobutylaluminium chloride, or a mixture thereof, most preferable is diethylaluminium chloride.
  • Titanium compound in step (c) is titanium alkoxide having at least one atom of chlorine, titanium halide, or a mixture thereof.
  • titanium compound in step (c) is titanium alkoxide having at least one atom of chlorine which can be selected from, but not limited to trialkoxy titanium monochloride, dialkoxy titanium dichloride, alkoxy titanium trichloride, or a mixture thereof.
  • titanium compound in step (c) is titanium halide which can be selected from, but not limited to titanium chloride, titanium bromide, or a mixture thereof, preferable is titanium chloride.
  • Organoaluminium compound in step (d) is triakylaluminium, alkylaluminium alkoxide, alkylaluminium halide, or a mixture thereof.
  • organoaluminium compound in step (d) is triakylaluminium which is selected from, but not limited to trimethylaluminium, triethylaluminium, triisobutylaluminium, tripropylaluminium, or a mixture thereof, most preferable is triethylaluminium.
  • organoaluminium compound in step (d) is alkylaluminium alkoxide which is selected from, but not limited to diethylaluminium ethoxide, ethylaluminium diethoxide, diisobutyl aluminum ethoxide, or mixture of said compounds.
  • organoaluminium compound in step (d) is alkylaluminium halide which is selected from, but not limited to dimethylaluminium chloride, diethylaluminium chloride, diisobutylaluminium chloride, methylaluminium dichloride, ethylaluminium dichloride, isobutylaluminium dichloride, aluminium trichloride, or a mixture thereof.
  • a mole ratio of aluminium to titanium for treating in step (d) is in the range of about 1 to 10, and preferable is in the range of about 1 to 5.
  • the treatment temperature in step (d) is in the range of about 0 °C to room temperature, and preferable the treatment temperature is at ambient temperature.
  • the treatment time in step (d) is in the range of about 2 to 3 hours.
  • organic solvent that may be selected include, but not limited to aromatic hydrocarbon, aliphatic hydrocarbon, cyclic hydrocarbon, preferable are toluene, benzene, ethylbenzene, cumene, xylene, hexane, cyclohexane, cyclohexene, heptane, or octane.
  • said catalyst preparation may further comprising a drying step of catalyst from step (d) which can be selected from, but not limited to stirring evaporation, vacuum drying, freeze drying, etc.
  • the invention relates to the use of catalyst prepared according to the invention for olefin polymerization reaction, wherein said catalyst may be used in the form of liquid, semi-liquid, or solid.
  • olefin polymerization reaction may be operated in reactor in liquid phase, gas phase, or slurry phase, and may be operated in batch or continuous process.
  • olefin may be selected from ethylene, propylene, 1-butene, 1-pentene, 1-hexene, 1 -octene, or a mixture thereof.
  • olefin is ethylene.
  • the present invention prepares high activity olefin polymerization catalyst by treating the catalyst by contacting with organoaluminium compound, wherein said catalyst may be prepared by a method described in the following comparative example Cat NT.
  • MgCl 2 magnesium chloride
  • PDC diethyl aluminium chloride
  • reaction was left at room temperature for at least 1 hour, and resulted solid was washed at least 2 times by using about 200 ml of heptane, then added with 200 ml of heptane, following by about 35 ml of titanium tetrachloride (T1CI 4 ). Then, said mixture was refluxed at about 90 to 100 °C for 1 hour. Resulted solid was washed at temperature of about 90 to 100 °C with at least 200 mL of heptane until there was no titanium found in washing solution. Then, it was dried under vacuum to give the catalyst as a final product.
  • T1CI 4 titanium tetrachloride
  • the catalyst according to the invention could be prepared by treating catalyst prepared from the above method by exposing to triethyl aluminium.
  • comparison catalyst Cat NT was suspended in 100 ml of hexane or heptane. Then, triethyl aluminium (TEA) was added at a mole ratio of aluminum to titanium (Al/Ti) as prescribed. The catalyst would change from white to grey-brown. Thereafter, said mixture was stirred at temperature is in the range of 0 to 60 °C for 2 to 5 hours. Resulted catalyst is analyzed for activation percentage and/or for ethylene polymerization.
  • TEA triethyl aluminium
  • Ethylene polymerization can be done by using the following conditions, wherein hexane, the catalyst, and triethyl aluminium were added into a reactor. Then, heating the reactor to the predetermined temperature while ethylene was fed continuously into the reactor. Resulted polymer product was filtered and dried. size of reactor 5 liters
  • catalyst according to the invention was mixed with about 10 ml of isopropanol, about 30 ml of 6 molar sulfuric acid solution (H 2 S0 4 ), and about 30 ml of deionized water was titrated with 0.1 M Ce(S0 4 ) 2 .4H 0 standard solution wherein diphenylamine was used as an indicator. The solution was turned to be dark-blue color at the end point.
  • Polymer density was determined using Julabo FT50 according to ASTM D1505 standard.
  • Melt flow rate of polymer could be determined using CEAST 7027 according to
  • Homogeneity of polymer could be determined using temperature rising elution fractionation - gel permeation chromatography (TREF-GPC), Polymer Char CFC, using column PLgel 10 ⁇ MIXED-B and PLgel 10 ⁇ Guard at temperature of 140 °C, using 1 ,2,4-trichlorobenzene as an eluent, flow rate at 1 ml/min. Measured molecular weight was compared with molecular weight graph from polyethylene standard from Polymer Laboratory covering molecular weight in the range of 540 to 2,000,000.
  • TREF-GPC temperature rising elution fractionation - gel permeation chromatography
  • Polymer Char CFC using column PLgel 10 ⁇ MIXED-B and PLgel 10 ⁇ Guard at temperature of 140 °C, using 1 ,2,4-trichlorobenzene as an eluent, flow rate at 1 ml/min.
  • Measured molecular weight was compared with molecular weight graph from polyethylene standard
  • Tensile modulus and tensile strength of polymer could be determined using Zwick Z050E. Polymer sample was prepared to be a sample with 3 mm thickness before being tested according to ASTM D638 standard.
  • the catalyst was prepared according to the invention as described above, wherein the mole ratio of aluminium to titanium (Al/Ti) in the treatment is 5 to 1 , and treatment temperature is at room temperature and 0 °C respectively. Then, the samples were collected for the analysis of reaction percentage of catalyst and TEA at different times. The result was shown in Figure 1 and 2.
  • T EF-GPC is showed in Table 2.
  • Figure 5 and 6 shows mechanical properties of the polymer resulted from ethylene polymerization reaction using different catalysts.
  • catalyst treated with organoaluminium compound at the mole ratio of Al/Ti in the range of 5 to 30 resulted in the polymer with higher strength considered from higher tensile modulus and tensile strength at yield point.
  • the catalyst prepared by the process according to the invention has high activity in olefin polymerization, resulting in good mechanical properties of the polymer, and has narrow molecular weight distribution, wherein said process can be perform easily, reducing complicated steps, and can be performed at low temperature as provided in the objectives of this invention.

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)

Abstract

La présente invention concerne un procédé de préparation d'un catalyseur de polymérisation d'oléfines à activité élevée, qui soit facile à produire, en réduisant les étapes compliquées, et qui puisse être produit à basse température, ledit procédé comprenant les étapes suivantes : (a) ajout d'un halogénure de magnésium dans un solvant alcoolique; (b) précipitation de la solution obtenue à l'étape (a) dans une solution d'un solvant organique contenant un composé organo d'un élément de groupe III; (c) ajout d'un composé de titane dans le mélange obtenu à l'étape (b) pour obtenir un catalyseur; d) traitement du catalyseur obtenu à l'étape (c) avec un composé organoaluminium à une température allant de 0 à 60 °C pendant 2 à 5 heures, le rapport molaire entre l'aluminium et le titane (Al/Ti) pour le traitement allant de 1 à 30.
PCT/TH2015/000055 2014-09-04 2015-09-04 Procédé de préparation de catalyseur de polymérisation d'oléfines à activité élevée WO2016036325A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP2017512040A JP6779202B2 (ja) 2014-09-04 2015-09-04 高活性オレフィン重合触媒の調製方法
EP15782094.5A EP3189085B1 (fr) 2014-09-04 2015-09-04 Procédé de préparation de catalyseur de polymérisation d'éthylène à activité élevée
KR1020177007665A KR102446942B1 (ko) 2014-09-04 2015-09-04 고활성 에틸렌 중합 촉매의 제조 방법
US15/508,790 US20170267791A1 (en) 2014-09-04 2015-09-04 Method for preparing high activity ethylene polymerization catalyst
CN201580047387.9A CN106715482B (zh) 2014-09-04 2015-09-04 制备高活性乙烯聚合催化剂的方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TH1401005145 2014-09-04
TH1401005145A TH1401005145B (th) 2014-09-04 วิธีการสำหรับการเตรียมตัวเร่งปฏิกิริยาสำหรับโอเลฟินส์พอลิเมอร์ไรเซชันที่มีความว่องไวสูง

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WO2016036325A1 true WO2016036325A1 (fr) 2016-03-10

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Country Link
US (1) US20170267791A1 (fr)
EP (1) EP3189085B1 (fr)
JP (1) JP6779202B2 (fr)
KR (1) KR102446942B1 (fr)
CN (1) CN106715482B (fr)
MY (1) MY180382A (fr)
WO (1) WO2016036325A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113845612B (zh) * 2020-06-28 2023-02-28 中国石油天然气股份有限公司 主催化剂的制备方法、催化剂及其应用

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1485520A (en) * 1973-12-26 1977-09-14 Mitsui Petrochemical Ind Process for polymerising or copolymerising olefins and catalyst therefor
US4564605A (en) * 1983-11-23 1986-01-14 Bp Chemicals Limited Catalyst and process for polymerizing olefins
EP0606908A1 (fr) * 1993-01-13 1994-07-20 Montell North America Inc. Composants et catalyseurs pour la polymérisation de l'éthylène
EP0659778A1 (fr) * 1993-12-17 1995-06-28 ENICHEM ELASTOMERI S.r.l. Catalyseur pour la préparation de copolymères élastomères d'éthylène et de propylène
US6429270B2 (en) 1998-09-14 2002-08-06 Union Carbide Chemicals & Plastics Technology Corporation Process for preparing olefin polymerization catalyst mixture
WO2004065431A1 (fr) * 2003-01-23 2004-08-05 Samsung Atofina Co. Ltd. Procede de polymerisation et de copolymerisation de l'ethylene
US6916895B2 (en) 1997-01-28 2005-07-12 Fina Technology, Inc. Ziegler-Natta catalyst for tuning MWD of polyolefin, method of making, method of using, and polyolefins made therewith
US7365138B2 (en) 2003-02-18 2008-04-29 Fina Technology, Inc. Pretreated and prepolymerized polyolefin catalyst, production thereof and method of use
EP2370477A1 (fr) * 2008-12-29 2011-10-05 Basell Poliolefine Italia S.r.l. Composants de catalyseur destinés à la polymérisation d'oléfines et catalyseurs obtenus à partir de ces composants
EP2428526A1 (fr) 2010-09-13 2012-03-14 Borealis AG Procédé de production de polyéthylène d'une homogénéité améliorée

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8440772B2 (en) * 2011-04-28 2013-05-14 Chevron Phillips Chemical Company Lp Methods for terminating olefin polymerizations

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1485520A (en) * 1973-12-26 1977-09-14 Mitsui Petrochemical Ind Process for polymerising or copolymerising olefins and catalyst therefor
US4564605A (en) * 1983-11-23 1986-01-14 Bp Chemicals Limited Catalyst and process for polymerizing olefins
EP0606908A1 (fr) * 1993-01-13 1994-07-20 Montell North America Inc. Composants et catalyseurs pour la polymérisation de l'éthylène
EP0659778A1 (fr) * 1993-12-17 1995-06-28 ENICHEM ELASTOMERI S.r.l. Catalyseur pour la préparation de copolymères élastomères d'éthylène et de propylène
US6916895B2 (en) 1997-01-28 2005-07-12 Fina Technology, Inc. Ziegler-Natta catalyst for tuning MWD of polyolefin, method of making, method of using, and polyolefins made therewith
US6429270B2 (en) 1998-09-14 2002-08-06 Union Carbide Chemicals & Plastics Technology Corporation Process for preparing olefin polymerization catalyst mixture
WO2004065431A1 (fr) * 2003-01-23 2004-08-05 Samsung Atofina Co. Ltd. Procede de polymerisation et de copolymerisation de l'ethylene
US7365138B2 (en) 2003-02-18 2008-04-29 Fina Technology, Inc. Pretreated and prepolymerized polyolefin catalyst, production thereof and method of use
EP2370477A1 (fr) * 2008-12-29 2011-10-05 Basell Poliolefine Italia S.r.l. Composants de catalyseur destinés à la polymérisation d'oléfines et catalyseurs obtenus à partir de ces composants
EP2428526A1 (fr) 2010-09-13 2012-03-14 Borealis AG Procédé de production de polyéthylène d'une homogénéité améliorée

Also Published As

Publication number Publication date
US20170267791A1 (en) 2017-09-21
CN106715482A (zh) 2017-05-24
KR102446942B1 (ko) 2022-09-23
EP3189085B1 (fr) 2019-08-07
JP2017526789A (ja) 2017-09-14
KR20170074856A (ko) 2017-06-30
MY180382A (en) 2020-11-28
JP6779202B2 (ja) 2020-11-04
CN106715482B (zh) 2022-05-24
EP3189085A1 (fr) 2017-07-12

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